Image Watermark

A fixed pixel size is measured on the image itself, so the same 54px stamp is barely visible on a 4000px photo and covers a small thumbnail. Scaling with each image keeps the watermark the same relative size across a batch of mixed resolutions. Logo watermarks already scale this way.

A pale watermark disappears over a bright sky and a dark one disappears into a shadow. A shadow or an outline keeps it readable over both. The outline colour is chosen automatically to contrast with your text colour; a logo gets a shadow either way, since an outline needs to know where the edges of the letters are.

How far apart the repeats sit when Position is set to Tiled. Tighter tiling is harder to crop or clone out; looser tiling covers less of the picture.